Lubricating system for projection machines



June 17, 1930. s- FsqAPPlER El' AL 1,764,783

LUBRICATING SYSTEM FOR PROJECTION MACHINES Original Filed Aug. 31. 1928 3 Sheets-Sheet l l" w if E V f/ Jul/'1e' 17,1930.

L. S. FRAPPIER l' AL LUBRICATING SYSTEM OR PROJECTION MACHINES Original Filed Aug. 3l, 1928 3 Sheets-Sheet 2 June 17, 1930.

L. S. FRAPPIER ET AL LUBRICATING SYSTEM FOR PROJECTION MACHINES Original Filed Aug. 5l. 1928 3 Sheets-Sheet 5 Patented June 17,y 1930 UNITED STATES PATENT OFFICE LOUIS SIMON FBAPPIER AND EWALD BOECKING, OF BROOKLYN, NEW YORK, ASSIGNOBS TO INTERNATIONAL PROJECTOR CORPO TION OF DELAWARE RATION, F NEW YORK, N, Y.,v A. CORPORA- LUBRICATING SYSTEM FOR PROJECTION MACHINES original application mea August 31, 1928, serial Nb.

v303,162. Bivided and this application led November 30, 1928. SerialA No. 3225786.v

This invention relates to a projection head for motion picture projection machines, and more particularly, to a method and means for applying lubricant to the mechanism included therein.

This applicationis a division of our copending application, Serial No. 303,162, iled August 31, 1928, for 4improvements in proj ection machines. j j s An object of the .present invention is to 1nsure an even lubrication to the various moving parts of the projection head.

Another object is to provide a continuous oil supply which is capable ,of applying a measured quantity of lubricant to the machine over a considerable period of time.

A further objectv is to provide an oiling mechanism which is capable of operating ir respective of the angular position of the projection head.

The above objects and others whlch will be apparent as the nature of the inventlon is disclosed are accomplished by dividlng the projection headinto a plurality of chambers,

i each of which contains certain of the rotating `gears and driving mechanism. A quantity of lubricant is maintained in each chamber sufficient to contact with the lower rotating gear, which thereupon applies said oil to the remainder of the rotating mechanism by a system involving a combination of pressure and splash.

The invention also consists in certaln new and original features of construction and combinations of parts hereinafter set forth and claimed.

Although the novel features which are believed tobe characteristic of this invention ,40 will be particularly pointed out in the claims appended hereto, theinvention itself, as -to lits objects and advantages, the mode of 1ts operation and the manner of its organization may be better understood by referring to the following vdescription .taken inconnection'- with the accompanying drawings forming a part thereof, innwhich r I,

Fig. 1 is a longitudinal sectional view of a projection head showing the 'gear chamber, and associated apparatus;

Fig. 2 is a transversefsectional view of the `upper portion of the projection head; and

Fig. 3 is a transverse sectional view ofthe lower portion'thereof.

Like reference characters denotev likeparts in the several figures ofthe drawings.

In the following description and in the claims parts will L:be identified by specific names for convenience, but they are intended to be as generic in their application to simi- 50 lar parts as the art will ermit.

Referring to the drawlngs more in detail, the projection head is shown as includin feed sprockets 10 and 11, by means of which the film is withdrawn from the upper film magazine-and applied to the lower film magajzlne respectively, intermittent sprocket 12, idler sprocket 13 and continuoussprocket 14. The particular form of const ctlon of the sprockets and method of moun in the same on .the driving shafts is describe in detail in the copending application above named. Only so much thereof as is necessary to an understanding of the oiling device will be set forth herein..

Sprockets 10 and 11 and the driving shafts ,therefor are of similar construction. Considering sprocket 11 by way of example, it is noted that said sprocket is secured upon rotating sleeve 20 which is driven by gear wheel 21 meshing with a cooperating gear 22 on vertical drive shaft 23. Sleeve 20 is rotat ably mounted upon stationary'shaft 24 which is provided with bearing surfaces 25 and 26. A'portion of sleeve 2O assing through the wall of loil chamber 2i) is provided with threads 28 which are adapted to prevent oil from creeping along said shaft into the film chamber and to discharge any oil which is applied thereto into the oil chamber. Shield may be mployecl for preventing direct passage of oil 1nto the film chamber.

Sprockets 12 and 14 may be of similar construction, and may be applied to shafts 30 and 31 respectively in any desired manner. Sprocket 12 has been shown by way of example as comprising a central portion 32 which is frictionally secured to shaft 30 and cupped end rtions 33 and 34. Oil shield 35 is positione1 interiorly of cupped portion 33 andpreve'nt's o il fromdischarging onto the surface of saidsprocket.

Shaft 30 is rotatably secured in` sleeve 37 by 'means 'of bearings 38 and 39. Said sha-ft is secured to lstar wheel'40 'forming a portion of the Geneva driving mechanism of any'well known form. Said driving mechanism includes gear wheel 41 which is secured upon yshaft 42 and is driven by cooperating ear 43. Said gear 43 is mounted upon sha 44 and is driven by gear 45 which meshes with a cooperating gear on vertical drive shaft 23. Shaft 44 is rotatably mounted in sleeve 46 by\ means of bearings 47 and 48.

Mounted in conjunction with gear 41 are a plurality of iins 50 (Fig. 1), which are adaptf ed to dip inthe oil contained in chamber. 51

and throw the same in a spray throughout the various parts of said chamber. Oil trough 52 is mounted adjacent gear wheels 43 and 45 and is adapted to catch a portion of this oil and discharge the same 'onto bearing 48.

Idler sprocket 13 is rotatably secured to sleeve 55 which rotates about stationary pin 56. Said pin 56 is drilled by longitudinal bore 57 andk transverse bore 58 to receive oil fron chamber 51 and apply the same to the rotating surface of sleeve 55. Said sleeve is also provided with oil threads 59 to prevent oil from creepin along the surface thereof.

The oil from pul ey 13 is discharged through passage 60 into lower oil chamber 27.

Shaft 31 is mounted for rotation in bearings and 79 and is driven by flexible washer 66 which is secured thereto between oil shields 67 and 68.y Said-washer is driven from housing 69 forming a part of gear wheel 70 which is driven by a suitable cooperating gear on sha'ft 23. Oil shields 71 forming a part o said housing are secured adjacent oil shields 67 and 68 for preventing access of oil to washer 66. Said oil shields may be provided' with oil threads for preventing creepage` of oil along the surfacel thereof and discharging said oil away from washer 66. Oil tube is provided with an open end 76 which is located adjacent gear wheel 70 in a position vto receive oil from said gear wheel and to discharge the same through passage 78 -tol bearing 65and through said pipe 75 to bearin 9. l

he upper oil chamber 80 includes a cen-.- trifugal control mechanism 81 and sleeve 82- for driving sprocket 10. Sleeve 82 is driven f 79. Oil

by gear 83 which is mounted thereon and cooperated with driving gear 84 on verticall 4shaft 23. Centrifugal device 81 is also driven Ozlng system The upper oil chamber 80 is lubricated by a bath 'of oil which is maintained therein at a level above the bottom of gear wheel 83. In rotating said gear wheel picks up oil from said bath, applies the same directly to gear 84 and rotates 4with suticient force to distribute the same throughout said chamber onto centrifugal device 81. An oil scraper 86 (Fi l? may be positioned adjacent the gear w ee 83 for preventing an excess of oil from beingcarried thereby.

In the second oil chamber 51 oil is maintained at a level sufficiently high to contact y The oil is Ithen 1 with fins '50 on' ear 41. thrown by4 said ns in the 'form of a fine spray throughout said oil chamber thereby oiling the various gears" in the upper portion thereof. Oil is thus a` plied through oil hole 90 to bearings 38 an 39 and passing over bearin 39 is discharged by oil shield 35 throug bore 92 'is`returned to oil chamber 51. The fine sprayalso lubricates the Geneva gears. A prtion of the spray is caught in trough 52 and applied through oil .hole 93 to bearings 47 and 48 o f shaft 44. Y. J

Sprocket 13 is oiled through bore 57 which communicates with the oil in chamber 51 and applies the same to the sleeve 58 whence it is discharged through passage 60 into oil chamber 27. 1

Oil is maintained in chamber 27 at a level above that of the bottom of the gear 21,\by which it is picked up and thrown onto gear 70 and throughout the various parts of the oil chamber. Oil which is carried by gear 70 is applied to the open end 76 of and thence dischargled through passage 78 to bearing 65 and t rough pipe 5, bearing contacting with sprocket'14 by means of shields 93 similar in construction to shield 35 described in connection with"sprocket 12,

thence it vis returned, through passage 94 to chamber 27 The oil thrown up by gear wheel 21 is ap lied throu h oil.hole 95 to bearings 25 an 26 on sha t 24, thence it is discharged through oil hole 96..'

Oil is-preferab y maintained at the desired llevels in chambers 80, 51 and 27 by .Means of pipes 97, 98 and 99 respectively (Fig. 1) which terminate in said chambers at the required oil level. Said ipes preferably ter-` minate adjacent gears l4 41 and 21 yres ctively in order that the proper level o oil pipe 75 om bearing 79 is prevented from bore 91 to shaft 42, thence through lio izo

i'st

will be maintained adjacent said gears irrespective of the angle of inclination of the projection head. This feature is of particutive pipesl until the oil level in the cham' bers in which theyterminate isvat or above the end of said pipes thereby preventing furtherquantities of air from entering said pipes and from being applied to reservoir 100. Thereafter no flow of oil will take place in said pipes until the oil level in one of the oil chambers falls belowl the bottom of the supply pipe and again admits air thereto.

- is necessary to remove cap 101 and thereby i said tank is being lled.

admit air to said reservoir. Pipes 97, 98 and 99 are preferablysuflciently small to discharge oil` at a slow rate, as for example, a few drops per minute .In this case the increase of iow in`said pipes during the time consumed in filling reservoirl .'100 will not be sufficient to aect the system. If desired, however, suitable valves may be employed for cutting olf, the vlflow of these pipes when It is noted ithatin the system above described "only one,application of oil is necessary,'namely ,4 in reservoir 100. Oil is applied continuously as desired from said reservoir' into the various gear chambers and is alfplied by a splashv system in said gear cham- -bers to the various rotating parts. The mechanism accordingly requires noV rigid supervisionand may be continuously ioperated .with only such attention as is necessary to maintain oil in reservoir 100.

vllhile ,certain novel features of the inven- I tion have been shown and described and are pointed out in the annexed claim-s, it will be understood 'that various omissions, substitutions and changes in the forms and details of the device illustrated and in its operation may be made by those skilled in the art without departing fromthe spiritof the irrventOn.

What is claimed is: 1. In a projection head-having plurality of vertically displaced-oil chambers, a driving shaft extending through said chambers, gear wheels associated therewith, a plurality of gears driven by said gear wheels and means for lubricating said gears comprising an oil bath contacting with a gear wheel in each chamber and means whereby Ioil is picked up by said last mentioned gear wheel and is applied to the re in said chambers.

2. In a projection head, an oil chamber, means for lubricating saidlchamber comprising an oil bath, a gear dip-ping in said bath,

means whereby said gear applies oil directly l to adjacent gears and applies a spray of oil throughout said chamber, an oil feed pipe terminating adjacent one of said gears, and means whereby oil is applied thereto from said gear in suiicient quantity for lubrication purposes. 'i l 3. In a projection head, an 011 chamber, a pair of rotating shafts therein, a driving shaft therefor, gears associated witheach of said shafts and said driving shaft, bearings for said shafts, means for lubricatingsaid bearings( and said gears'comprising an' oil bath in said chamber, a. gear on one of said shafts dipping in said bath and applying said oil to the remainder of said gears, an oil pipe n I for directing oil to one of said bearings, said For purposes of fillingthe reservoir 100 1t pipe terminating adjacent one of said gears and having an open end adapted to receive oil therefrom.

4. In combination with a projection head,

associated with said-Genevaa gear and dip-- ping in said bath, said lins being adapted to.

mainder of the rotating parts I throw said oil throughout the various parts ofsaid chamber, a shaft for driving said Geneva gear, bearin for said shaft and an oil trough for catching oil discharged from said fins and for applying said oil to said bearings.

.5; In combination with a projection head having a pair of oil chambers, an idler pulley located at the lower portion of one of said chambers, an oil bath in said chamber, means for applying oil from said bath to said sprocket and means for discharging oil from aid sprocket into the other of said chamers.

6. In combination with a projection head havin an oil chamber, means for maintaining a ath of oil in said chambercom rising a closed oil reservoir located above saidchamber and a' discharge pipe leading from said reservoir and termin-ating at the required oil level in said chamber.

7. In combination with .a projection head having a plurality -of oil chambers, means for maintaining a' bath of oil in each of said chambers comprising a closed oil reservoir locatedabove said chambers, and pipes depending from said reservoir and terminating in said chambers at the level of oil required therein, said pipey serving to discharge oil from said reservoir into said chambers.

8. In a projection head, a plurality of oil chambers, lubricating ,ineans including an oil `bath in each of said chambers, elements dip- Aply pipes from said reser'voir terminating in each of said chambers adjacent said elements at the 1`eve1 ofthe required bath, said pipe serving to maintain the bath at therequlred level for permitting said ears to dip therein irrespective of the angle o inclination of the projection head;

LOUIS SIMGN FRAPPIER. EWALD BOECKING. 

